White silk disease caused eggplant wilt and death, how to control eggplant white silk disease

The white silk disease of eggplant mainly harms the base of eggplant stem. When the disease first appeared, it was a dark brown water-like spot, and produced white and glossy silk mycelium, which caused the stem cortex to rot, and finally the eggplant withered and fell off or the plant withered.

After the disease, the leaves and petioles of the plant withered, and the general leaves did not fall off. Some leaves are withered and yellow, others are always green, and finally the whole plant dies, but the root system is generally intact. The disease is mainly spread by the radial extension of the mycelium on the surface. The disease has a central disease plant, high temperature and humidity is conducive to the occurrence and epidemic of white silk disease, the appropriate temperature is about 30 ℃, and the relative humidity is more than 95%. Through the investigation, we can see that the land with extensive management, excessive watering, low-lying terrain and poor drainage has the occurrence of white silk disease.

Eggplant white silk disease

The white silk disease of eggplant can be controlled by the following methods:

1. Comprehensive prevention: try to level the land before sowing eggplant, avoid stagnant water in the field; control planting density, adopt the planting mode of wide and narrow row spacing, increase field ventilation and light transmittance to reduce the occurrence of diseases, but also conducive to field operation and improve management efficiency; balanced fertilization, appropriate use of phosphate and potassium fertilizer, especially nitrogen fertilizer should not be overused. Special attention should be paid to the fact that farm manure must be ripened and fermented before application, otherwise unmature farm manure is more conducive to the occurrence of a variety of diseases and insect pests.

two。 Atailing (6% oligosaccharide chain protein) was skillfully used to treat the seedlings so that the eggplant was not susceptible or lightly susceptible. Artailing can resist the invasion of bacteria by activating the immune system of eggplant, while promoting the production of more lignin to tighten the epidermis of eggplant stem and prevent the invasion of bacteria. A week before eggplant transplanting, spraying seedlings with a bag of water (15g) per bucket, after planting slow seedlings, before flowering and in the peak fruiting period, spraying alone or mixed with other agents can greatly reduce the occurrence of white silk disease or other diseases.

3. Remove the central diseased plant: in the early stage of the disease, find the central diseased plant of eggplant in time. The central diseased plant is the basis of expansion, which should be uprooted as soon as possible and taken out of the field for destruction.

4. Mix with 40% pentachloronitrobenzene and 40 kg fine dry soil, sprinkle the hole of infected eggplant and the surrounding soil, then water it and disinfect it. Xiumiao 800 times solution can also be selected, and Zhongbao Atailing can be used to disinfect the diseased eggplant field by spraying the ground, filling holes or spraying for 1-2 times, but pay attention to the amount of medicine should be enough to infiltrate the root system of eggplant.